This Jandy 6581 Aqualink RS3 HP Pool & Spa Control System Relay with Harness is the perfect addition to your pool or spa system. It is specially designed for use with theJandy Aqualink system and is made of high-quality plastic, metal, and copper materials. This relay comes with a number of features that make installation easy and hassle-free. The package includes one relay, and it is suitable for use with a variety of pool equipment and parts. Whether you're a professional pool technician or a DIY enthusiast, this Jandy 6581 Aqualink RS3 HP Pool & Spa Control System Relay with Harness is an excellent choice.